--- title: "QuickStart API Testing - Set Message Content Type" slug: "quickstart-api-testing-set-message-content-type" updated: 2023-05-10T15:01:46Z published: 2023-05-10T15:01:46Z canonical: "knowledge.curiositysoftware.ie/quickstart-api-testing-set-message-content-type" --- > ## Documentation Index > Fetch the complete documentation index at: https://knowledge.curiositysoftware.ie/llms.txt > Use this file to discover all available pages before exploring further. # QuickStart API Testing - Set Message Content Type The API module editor has been enhanced to include a new feature that allows you to select the content type to be sent. This feature supports XML and JSON data types, which are crucial for testing SOAP and REST-based APIs. [Embedded content](https://www.youtube.com/embed/9A4YsUcq3yM?&wmode=opaque&rel=0)